Former IKOS employee stole trading codes to set up rival firm

``A former employee of IKOS Asset Management stole vital computer codes from the star hedge-fund manager as part of a plan to set up a rival firm, a judge has ruled. Vincent Pfister secretly plundered the information while he worked for IKOS, which was based in London but is now headquartered in Cyprus. The hedge fund uses hugely sophisticated technology to make its investments. ''